Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: External Hard Drive failure. "Bad disk" after power failure

11 Oct 2014   #1

Windows 7 Home 64bit
External Hard Drive failure. "Bad disk" after power failure

Hi Everyone,

I'm hoping to get some help. I had a power outage while my WD Elements 1.5 TB Hard drive was on. I wasn't accessing it but apparently that was enough.

I had a lot of important data on it but losing hope after unsuccessful attempts to use PhotoRec to get items off it.

It doesn't show as accessible in MyComputer but is detected. I've included what it shows under the "Manage" view of the drive.

I've also tried MiniTool Partition but it doesn't seem to be able to fix the partition. I've also tried Partition Bad Disk and it just shows the whole 1.5 TB drive as one bad block. It won't let me fix it either.

Does anyone have any other bits of advice? I'm at a loss as what to do. It seems the data is not recoverable. I can't figure out how to get it to show or even how to use it again.

Please see attachments.

I'm grateful for any ideas/help please. Thank you.

Attached Thumbnails
External Hard Drive failure. "Bad disk" after power failure-manage.jpg   External Hard Drive failure. "Bad disk" after power failure-hard-drive-minitool-partition.jpg  
My System SpecsSystem Spec
12 Oct 2014   #2

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1

Hello dime5150. Welcome to the forum

In PW, did you try "Rebuild MBR"?
My System SpecsSystem Spec
12 Oct 2014   #3

Windows 7 Home Premium 32 bit

Manufacturer's Diagnostic/repair utility : Western Digital Data Life Guard Diagnostic for Windows. WD Support / Downloads / My Cloud Apps + Other Products / Data Lifeguard Diagnostic for Windows

Go ahead and check your hard disk with this utility. If the Short Test fails, then Long Test. If the Long Test also fails, unable to repair then RMA.
My System SpecsSystem Spec

12 Oct 2014   #4

Windows 7 Home 64bit

TVeblen: Thank you. No I have not tried that yet.

jumanji: Thank you as well for responding. I ran the Data Lifeguard Diagnostic for Windows with the following results:

Short Test: PASS

Sorry it took so long to respond. Let me know what next steps I should take. Eager to see if I can save the data off the drive!

I should also add that the drive is from 2010 so not under any warranty.
My System SpecsSystem Spec
13 Oct 2014   #5

Windows 7 Home Premium 32 bit

You have to run the Extended Test also to detect and repair the bad sectors if any.

This extended test may take a long time. Do it and let us know the results.

If extended test passes, then post a screenshot of Windows Disk Management as well as Partition Wizard.
My System SpecsSystem Spec
13 Oct 2014   #6

Windows 7 Home 64bit

jumanji: Thanks again.

When trying to run the Extended Test, it states "Too many bad sectors detected." and shows FAIL next to it.

Let me know what next steps I should take thanks!!
My System SpecsSystem Spec
13 Oct 2014   #7

Windows 7 Home Premium 32 bit

When Partition Wizard showed your disk as Read only and Bad Disk, that is what I suspected. When there are too many bad sectors that couldn't be remapped to Reserved sectors which already got exhausted, the drive controller may make it read only.

I am afraid that I cannot suggest any means of data recovery from such an HDD full of bad sectors. You have already tried PhotoRec.

What I am surprised is whether a power failure can damage the HDD like this or it was just a coincidence. I am sending a PM to Anshad Edavana to look into this and see whether he has any ideas on how to go about this. He may take sometime to respond since it is already bed time here.

In the meanwhile you can try to clear the read only attribute by following the methods here, using elevated diskpart.
Change External hard drive from read only back to read & write - Microsoft Community

External Hard Drive Read Only - Trouble Shooting and Solution

I am not sure whether that will work but no harm in trying.

If by chance, the read only attribute gets cleared and you are able to access the drive, post-haste copy whatever data you can to another external. Yep have one ready to do that.

Good luck.
My System SpecsSystem Spec
13 Oct 2014   #8

Windows 7 Home 64bit

Thanks Jumanji. I will try changing it to ready only. I also have an old computer laying around that I may try to install the OS Ubuntu on. People were saying sometimes Ubuntu can read external HD's thought dead.

Hopefully I can get it showing so I can at least get some items off of it. I'll let you know the result and let me know if you have any other ideas.
My System SpecsSystem Spec
13 Oct 2014   #9
Anshad Edavana

Windows 7 Ultimate x64


"Too many bad sectors" message by "WD lifeguard Diagnostics" is definitely a bad news . Since the disk is detected as "Not initialized" by "Disk Management", i assume the MBR and partition table are destroyed or in unreadable state so the Ubuntu method is less likely to be succeeded. However there is nothing wrong in trying Linux as it saved my ass several times in similar situations. By the way you don't need to install Linux. You can simply boot Ubuntu as a live disc without installing it to hard drive.

Try Ubuntu before you install it | Ubuntu

If Linux can't identify neither partition table nor a valid file system, i would suggest the below steps.

1. Reboot in to Windows and download trial version of "HDTune Pro" from

2. Connect your external HDD and open "HDtune Pro". Then select the disk in question from the drop down menu ( upper left corner ) and navigate to the "Error Scan" tab. Press the "Start" button and wait patiently until the scan completes.

One the scan is finished, take a screenshot and upload it with next reply.

Take a screen capture (print your screen) - Windows Help
My System SpecsSystem Spec
13 Oct 2014   #10

Windows 7 Home 64bit

I went ahead and tried to display the disks/volumes as instructed to change external to read only. I run into a problem. When I select the appropriate disk (disk 1) which is the external and list volumes, it only shows the boot disk volumes. When I select "detail disk" it just stops diskpart from working and restarts it. I'm not able to change it. See attached screenshots.

I will try the Ubuntu route as well and then if that doesn't work, HDtunepro.

I will then post results. Thank you once again.

Attached Images
External Hard Drive failure. "Bad disk" after power failure-disk-part-1.jpg External Hard Drive failure. "Bad disk" after power failure-disk-part-2.jpg 
My System SpecsSystem Spec

 External Hard Drive failure. "Bad disk" after power failure

Thread Tools

Similar help and support threads
Thread Forum
WD EXTERNAL HARD DISK 1TB suddenly "unallocated" and "not initialized"
Hi guys. I'm new here. I've tried to read all the discussion about how to fix the unallocated hard drive but I just can't understand it as the cases were pretty much different than I'm facing of. Here's my problem. Yesterday my external hard drive seems normal, everything is fine, until...
Hardware & Devices
BSOD "Driver power state failure" caused by: ntoskrnl.exe
Hi Folks, I really hope you can help me, I followed the instructions to create the attachement. What I know so far is that this machine has BSOD'd several times...The last 2 times a ultilty called BlueScreenViewer.exe says it's due to "Driver power state failure" caused by: ntoskrnl.exe ...
BSOD Help and Support
BSOD when going sleep mode "DRIVER POWER STATE FAILURE"
Hi, i keep having this issue. Anyone knows how to solve? My minidump is
BSOD Help and Support
Hard disk failure: "This may fail soon" :(
Hi. I was sitting and enjoying windows vista home premium (Dual-booting with 7 ;)) on my laptop, and i was formmating a part of my hard disk suddenly the computer shuts down and acts wierd when i start it the firste time, but the second time it boots normally, then when i got into windows its says...
Hardware & Devices
"Disk boot failure, insert system disk and press enter"
Pretty much what happened is that my powersupply got messed up one day and just turned off my computer and I couldn't boot it back up. I ordered a new PSU and I installed it but now when I boot my computer I'm getting "Disk boot failure, insert system disk and press enter". I've tried putting in...
General Discussion
BSOD with "usbhub.sys" and "driver power state failure"
I have been getting the BSOD since a few weeks and found out by trial and error that a USB-hub is causing the problem. Whenever I disconnect the hub before I shut off the computer I do not get the blue screen. Yesterday I also got a BSOD that mentioned driver power state failure. After I had...
BSOD Help and Support

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 13:13.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App